238 lines
6.2 KiB
PHP
Executable File
238 lines
6.2 KiB
PHP
Executable File
<?php
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namespace api\core;
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use \error\core\Error;
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use \error\core\Err;
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use \api\core\AuthSystem;
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class AuthSystemDefault implements AuthSystem{
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public function __construct(){
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self::check();
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}
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/* INITIALISATION DU SYSTEME ET MISE A JOUR CONSTANTES D'AUTHENTIFICATION
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*
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*
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*/
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public static function check(){
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/* (1) Initialisation
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---------------------------------------------------------*/
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if( !isset($_SESSION['AUTH']) ) $_SESSION['AUTH'] = [];
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if( !isset($_SESSION['USER']) ) $_SESSION['USER'] = [];
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if( !isset($_SESSION['ADMIN']) ) $_SESSION['ADMIN'] = [];
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/* (2) Gestion de AUTH (authentification)
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---------------------------------------------------------*/
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/* (1) Si Auth dans HEADER, on le récupère */
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$AUTH = isset($_SERVER['PHP_AUTH_DIGEST']) ? $_SERVER['PHP_AUTH_DIGEST'] : '';
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/* (2) Si Auth dans SESSION, on le récupère */
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if( $AUTH == '' && isset($_SESSION['AUTH']) )
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$AUTH = implode('', $_SESSION['AUTH']);
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/* (3) Gestion de AUTH en fonction des tokens
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---------------------------------------------------------*/
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/* (1) Token Authentication: ADMIN */
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if( preg_match('/^(u[a-f0-9]{128})$/', $AUTH, $match) )
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$_SESSION['AUTH'] = [ 'token' => $match[1], 'type' => 'user' ];
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/* (2) Token Authentication: USER */
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elseif( preg_match('/^(a[a-f0-9]{128})$/', $AUTH, $match) )
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$_SESSION['AUTH'] = [ 'token' => $match[1], 'type' => 'admin' ];
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/* (2) Aucune authentification */
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else{
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$_SESSION['AUTH'] = [];
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$_SESSION['USER'] = [];
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$_SESSION['ADMIN'] = [];
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}
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/* (4) On vérifie l'authentification par BDD
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---------------------------------------------------------*/
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if( !self::deepCheck() ){
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$_SESSION['AUTH'] = [];
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$_SESSION['USER'] = [];
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$_SESSION['ADMIN'] = [];
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}
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}
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/* VERIFICATION DE L'AUTHENTIFICATION
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*
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*
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*/
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private static function deepCheck(){
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/* [1] Si aucune authentification
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=========================================================*/
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if( self::auth_level() == 0 )
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return false;
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/* [2] Si authentification token -> ADMIN
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=========================================================*/
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if( self::auth_level() == 2 ){
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// TODO: implement ADMIN database auth. check
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// + set $_SESSION['ADMIN']
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// + return FALSE on error
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}
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/* [3] Si authentification token -> USER
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=========================================================*/
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if( self::auth_level() == 1 ){
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// TODO: implement USER database auth. check
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// + set $_SESSION['USER']
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// + return FALSE on error
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}
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/* [5] Si pas d'erreur d'authentification, on retourne TRUE
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=========================================================*/
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return true;
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}
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/* VERIFICATION DES ACCES EN FONCTION DE PERMISSIONS ATTENDUES
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*
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* @module<String> Module concerné
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* @expected<array> Liste de listes de combinaisons de permissions attendues
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*
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* @return error<Error> Si FALSE, pas la permission, sinon si
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*
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*/
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public static function permission($module, $expected){
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$error_propag = [];
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/* [1] Check format -> if not array of array(s) -> ERROR
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=========================================================*/
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/* (1) If not array -> ERROR */
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if( !is_array($expected) )
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return new Error(Err::FormatError);
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/* (2) If not array of array(s) -> ERROR */
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foreach($expected as $permissions)
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if( !is_array($permissions) )
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return new Error(Err::FormatError);
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/* [2] Foreach each set of permission
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=========================================================*/
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foreach($expected as $permission_group){
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/* If granted -> don't go further */
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$error_propag[]= self::check_permission_group($module, $permission_group);
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if( $error_propag[count($error_propag)-1] == Err::Success )
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return new Error(Err::Success);
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}
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/* [3] By default return `PermissionError`
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=========================================================*/
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if( count($error_propag) > 0 )
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return new Error($error_propag[count($error_propag)-1]);
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return new Error(Err::PermissionError);
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}
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/* VERIFICATION DES ACCES EN FONCTION DE PERMISSIONS ATTENDUES
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*
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* @module<String> Module concerné
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* @expected<array> Liste des permissions attendues
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*
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* @return error<int> Err:: error constants
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*
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*/
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private static function check_permission_group($module, $expected){
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/* [1] Gestion de l'AUTH (authentification)
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=========================================================*/
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/* (1) Si entrepot requis, mais manquant
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---------------------------------------------------------*/
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if( in_array('admin', $expected) && ( self::auth_level() < 2 || !isset($_SESSION['ADMIN']['id']) ) )
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return Err::PermissionError;
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/* (2) Si admin requis, mais manquant
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---------------------------------------------------------*/
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if( in_array('user', $expected) && ( self::auth_level() < 1 || !isset($_SESSION['USER']['id']) ) )
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return Err::PermissionError;
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/* (3) On retire 'admin', et 'user' de @expected
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---------------------------------------------------------*/
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$adminIndex = array_search('admin', $expected);
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$userIndex = array_search('user', $expected);
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if( is_int($adminIndex) ) unset($expected[$adminIndex]);
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if( is_int($userIndex) ) unset($expected[$userIndex]);
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/* [2] Gestion des permissions CUSTOM
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=========================================================*/
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/* (1) Vérification de toutes les permissions requises */
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foreach($expected as $permission)
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// Si il manque au minimum une permission, on retourne FALSE
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if( !in_array($permission, $_SESSION['PERM']) )
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return Err::PermissionError;
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/* [4] Si on a toutes les permissions requises
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=========================================================*/
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return Err::Success;
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}
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/* RENVOIE LE NIVEAU D'AUTHENTIFICATION
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*
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* @return auth<int> Niveau d'authentification (0 à 2)
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*
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*/
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public static function auth_level(){
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/* (1) Not set */
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if( !is_array($_SESSION['AUTH']) || !isset($_SESSION['AUTH']['type']) )
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return 0;
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/* (2) Admin / User */
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return ($_SESSION['AUTH']['type'] == 'admin') ? 2 : 1;
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}
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}
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?>
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